Your reply is very interesting and I am sure we are both looking for the same Charles Hackers who married Betsy Walker in 1873.
However, there are anomalies. The change in surname is not much of an issue but the dates and age of Charles do not correlate.
The ages of Charles as shown on the census for 1861/1881/1891/1901 would give him a birth range of 1841 to 1844. His marriage certificate indicates he was 29 in 1873 so would have been born 1844.
I would dearly love your information to be correct, but I must ask what is the source of your information and how you have managed to substantiate the facts.
Re my wife's family tree:
Mother: Ethel Hackers b1922
Grand Father: Alfred James Hackers 1893/1954
GGFather: James R Hackers 1870/1946
GGGFather: Charles Hackers
I can send you a detailed file of our Hackers line via a word document if you are interested. Just send me your Email address.
Simon Carfax (firstname.lastname@example.org