We first see Frederick in 1861, living at Sudbury, Suffolk:
Salome Daniel Head 80 Wid Annuitant Nayland Suffolk
Henry Daniell Son 42 UnM Solicitor Nayland Suffolk
Mary Blyth Servant 60 Wid Housekeeper Holton Suffolk
Mary Pilgrim Visitor 28 Mar Ospringe Kent
Frederick C Pilgrim Visitor 6 months Stoke by Nayland Suffolk
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In 1871, we see Frances' father, Frederick living at 1 Lower Street, Higham, Suffolk with his parents:
Frederick Pilgrim Head Mar 44 Gardener Suffolk
Mary Pilgrim Wife Mar 39 Wife of Gardener 39 Kent Ospringe
Frederick Chambers Pilgrim Son 10 Scholar Suffolk Higham
Ernest Pilgrim Son 7 Scholar Suffolk Higham
Mary Blyth Pilgrim Daur 5 Suffolk Higham
Maurice Pilgrim Son 4 Suffolk Higham
Frank Pilgrim Son 1 Suffolk Higham
Mary Blyth Aunt Wid 70 Suffolk Holton
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Frederick married Frances, his first wife, in 1885.
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In 1891, we see Frederick and his first wife, Frances, living with her parents at 25 Addison Road (Gardners Cottage), Kensington, London:
Frederick C Pilgrim Head Mar 36 Head Gardner Suffolk Higham
Frances Pilgrim Wife Mar 36 Salop Clunton
Ellen F H Pilgrim Daur 4 London Kensington
Reginald F Pilgrim Son 2 London Kensington
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In 1901, we see Frederick C Pilgrim living at 128 Uxbridge Road, Hammersmith, London:
Frederick C Pilgrim Head Mar 40 Florist Higham Suffolk
Frances Pilgrim Wife Mar 41 Clunton Shropshire
Ellen F H Pilgrim Daur 14 Kensington London
Reg. F Pilgrim Son 12 Kensington London
Isabella Knibbs Friend 31 - Assistant Florist Co. Col Ireland

Clearly, this was where Frederick was to meet Isabella in later years.
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In 1911, we see Fredeick, his first wife and family, living at 7 St Mary Abbott's Terrace, Kensington,London:
Frederick C Pilgrim Head 50 Mar Florist Higham Suffolk
Frances Pilgrim Wife Mar 50 (26 years) Clunton Shropshire
Ellen Frances Hints Pilgrim Daur 24 UnM Shorthand Typist Kensington London
Reginald Frederick Pilgrim Son 22 UnM Kensington London
Isabella Knibbs 41 UnM Florist Assistant Portobello Ireland.
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From the Fulham Chronicle - 03 November 1916:
Tuesday. - Before Mr. T. K. Francis.
West Kensington Carman And Sore Horse.
Philip Batson, 16, a carman, of 41 Masbro-road, Blythe-road. West Kensington, was charged with cruelly to a horse by working it in unfit state at Kensington-road on October 24th. Frederick Chambers Pilgrim, of 7 St. Mary's Abbot-terrace, Kensington, was now summoned for causing the animal so worked. - P.C. Trinder 163B, stopped the horse because it appeared be in pain. Between the forelegs he found a large running wound, which was being rubbed the girth strap. Batson, the driver, said to the constable “I showed my master, and told me to take it out of the stable." The defendant Pilgrim afterwards said to the officer "I had no knowledge of it".
- Prisoner: There is an error there that the lad showed me the wound. He showed me where an old wound had been when the horse cam in about a foernight ago.
- William Kirk, veterinary surgeon, said he examined the animal on October 24th. It was a bad wound, seven or eight days old and was much inflamed through coming in contact with the girth strap; otherwise the horse was In very fair condition.
- Pilgrim was told to pay the costs, 21s. The driver was discharged.
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Frederick married Isabella Knibbs in 1930.
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We see Frederick in 1939 living at 7 Saint Mary Abbots Terrace St Mary Abbots Terrace, Kensington, London:
Frederick C Pilgrim 04 Oct 1860 Florist Fruiter Married
Isabella Pilgrim 15 Jul 1870 Unpaid Domestic Duties Married
Mary B Pilgrim 13 May 1865 Old Age Pensioner Single
Iris M E James (Hay) 14 Feb 1917 Domestic Servant Single
Doris EThomas (Hay) 28 Oct 1913 Trained Nurse Single
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From the Kensington News and West London Times - 09 January 1942:
DEATHS
PILGRIM - On January 4th 1942 Frederick Chambers Pilgrim F.R.H.S. aged 81 years - of 18 Addison road W14, A Member of the Royal Choral Society for years and Chorister at St Barnabas Church Kensington for the same period. Funeral Service St Barnabas Church on Saturday January 10th at 10.45. Interment at Kensington Cemetery Hanwell. Flowers to C. G. Hatt & Son Ltd., 82 Kensington High street, W8.

In 1861, we see Frances living at High Road, Clunton, Shropshire with her parents:
Thomas Hints Head Mar 39 Wheelwright Salop Clunton
Jane Hints Wife Mar 40 Salop Aston
Mary A Hints Daur 14 Salop Clunton
William Hints Son 10 Salop Clun
Martha Hints Daur 7 Salop Clunton
Hane Hints Daur 4 Salop Clunton
Frances Hints Daur 1 Salop Clunton
Charles Deakin Journeyman UnM 21 Wheelwright Salop Aston
Francis Williams Ap UnM 20 Wheelwright Salop Sidbury North

Salop is of course, and abbreviation of Shropshire.
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In 1881, we see Frances and her sister Martha, boarding at 21 Aberdeen Road, Marylebone, London:
James E Davies Head Mar 31 Colporteur Shropshire Horton Lane
Milly Davies Wife Mar 35 Oxford
Lilly Davies Daur 4 London
Edwin Davies Son 2 London
Martha Hints Boarder UnM 26 Shropshire Clunton
Frances Hints Boarder UnM 21 Shropshire Clunton
Helen Powers Boarder UnM 27 Devonshire Torquay
Sarah Ann Powers Boarder UnM 25 Devonshire Torquay
Fanny Lute Lodger Wid 45
Fanny Lute Lodger UnM 19
Harriet Jensen Lodger UnM 30 Kent Folkstone
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Frances married Frederick Pilgrim in 1885.

Ellen married a man named William J Quinley in q2/1912 at Kensington District, London.

Reginald married Daisy P Myer in q2/1912 at Kensington District, London