First one took place in 1875 between a William Fitzgerald (b1852) and a Kate Lamb at St Johns, Tower Hamlet. Williams father is listed as Hary Fitzgerald although looking at the record I'm wondering if it could be Henry as his name is William Henry but he does seem to drop the William part. I cannot make out his occupation, in all previous census records he is listed as a painter.
Second one is between Elizabeth Susan Fitzgerald and John William Pearman on 14 June 1875 also at St Johns. Again her father's name looks like it could be Henry Fitzgerald but I cannot make out the occupation.. so don't know if it's him??
I think these both say "Blind maker" for occupation of Henry.
For comparison I looked at the marriage record between my great great parents Matthew Fitzgerald and Harriett Harding (Matthew being the sibling of William and Elizabeth) who married in 1877. I know that this marriage record is the correct one and it does list Henry Fitzgerald as his father but occupation looks different.. I think it says Painter but not sure?
Matthew's father's occupation certainly looks like Painter to me.
There is also the marriage for Charles:
Name: Charles Fitzgerald
Gender: Male
Marriage Age: 21
Record Type: Marriage
Birth Date: abt 1864
Marriage Date: 23 Mar 1885
Marriage Place: Christ Church, Jamaica Street, Tower Hamlets, England
Father: Henry Fitzgerald
Spouse: Mary Ann Legg
Henry Fitzgerald (deceased) is said to have been a "Venetian blind maker"
Hope that helps