Jackson Family

First timer here so please forgive me if i get things a wee muddled as this is fairly new to me have just found this site so hoping that some people may find some information for me that will help.
I am trying to find information on my 4xs great grandmothers family,the information that i have is minimal but it maybe enough to start with.
My grandmothers name was 'Margaret Jackson' and she was the daughter of George and Margaret Jackson.
Her mothers name was Margaret Phillips.
George and Margaret were married in Liverpool,in December 1804 i believe.
I would like to know if Margaret [ my 4xs great grandmother] had any siblings if so how many, an what would be the occupation of George in that era.
George and Margaret were married at St.Annes in Liverpool
Any help would be very very much appreciated indeed[sorry its not much but maybe it will strike a cord with someone. Thanks for taking time out to read this.