A little more:

Interesting to me that there doesn't seem to be a record of Jessie's birth. I wonder if there would be a baptism.

Also, if Sophie was mother of 9 children, there is "room" for child(ren) before Jessie in 1891, (I had wondered about the 7-year gap between Archibald and Jessie, which is why I thought of the possiblity of a first wife for Henry) and also the possibility of children after the birth of Frederick. The 4 children living in 1911 are probably Jessie, Henry, Albert, and Frederick.

Henry Gillon born Liverpool, about 1861. He married, Liverpool, July-Aug-Sept 1886, Sophia E. Radcliffe, daughter of James Radcliffe and Ann _____. She was born in Andreas, about 1861-2.

Sophia was buried in Maughold, February 26, 1946, age 84.

Children of Sophie Radcliffe and Henry Gillon (1911 census states she was mother of 9 children, with 4 living in 1911)

i. Archibald (perhaps the son of Henry and a possible first (?) wife)
ii. Jessie born Liverpool 1891
iii. Angus Henry born Ramsey, June 12, 1893, and buried Maughold, September 14, 1896.
iv. Annie Anastasia born Ramsey June 8, 1895, and buried Maughold, September 29, 1896, age 16 months
v. Henry born Ramsey, February 5, 1897.
vi. Albert Victor born Ramsey, December 21, 1899, baptized Maughold October 28, 1900, and died Lezayre, Jun 15, 1970.
vii. Frederick Baden baptized Maughold March 14, 1901, and died 1965, age 63.

Census:
1891 Toxteth Park, Liverpool: 1891 Toxteth Park District 19 (Liverpool) (St. Philemon’s Eccl. District): Henry J. Gillan 30 plumber and painter Liverpool; Sophia 28 IOM Ramsey; Archibald 7 Liverpool; infant daur 21 days Liverpool

1901 Maughold (Ramsey, King St, St. Paul’s): Henry Gillon 38 house painter born England; Sophia 38 born Andreas; Henry 4, born Ramsey; Albert 1, born Ramsey [WHERE IS ARCHIBALD, 17; HAD HE DIED? JESSIE IS WITH GRANDMOTHER RADCLIFFE in both 1901 and 1911; is that because grandmother needed "help"?]

1911 Maughold: Henry Gillon 48 housepainter, M27yrs, born Liverpool; Sophie 47 M27yrs, 9 children, 4 living, Ramsey [CHILDREN ARE NOT LISTED IN THIS CENSUS]