You kind of got me with the comment about you being in high school. I have a daughter, and she is one of the reasons I'm researching our ancestry also - I want her to know where she came from.
Since Louisiana is my major focus of research, and I had some time today, I went ahead and looked up all 64 Anthonys in the 1870 LA census for you.
I do want to say that I did this quickly, so I may have missed something, so you may want to re-check for yourself. Also, not everyone may agree with the assumptions I have made, but we all have our own way of doing things.
Out of the 64 Anthonys, only ONE stands out as a possibility to me, but he is only that, a POSSIBILITY. That would be Chisum and Easter Anthony in Ascension parish (1 w Donaldsonville, page 9). They have a son Buck, age 12. Chisum was born in VA.
I should point out that many of the African American Anthonys in LA were born in VA, which is interesting all by itself. It is easy to eliminate quite a few of the 64 Anthonys based on a number of factors and assumptions. First of all, they should have a son around age 10 (give or take a few years - the census is not always accurate, and ages can be way off sometimes), secondly, I'm making the assumption that Andrew's father was in fact born in VA, as he states in the 1900 census; I'm also making the assumption that James is Andrew's brother in the 1900 census (I think it is a pretty good bet), and he also states his father was born in VA, which further indicates to me that their father was in fact born in VA. Next, some people can be eliminated because of age - way too young, or way too old. Next, because everyone is coded "B" in the race category, chances are that Andrew's father is not white, although he may have been "mulatto," so I eliminated all the white Anthonys (there were'nt many anyway,and most wouldn't have qualified for other reasons). Next, assuming that James was indeed Andrew's brother, and if he was in fact born around 1869, I also looked at that, in the sense that if a couple had a son around 10 (maybe Andrew), but also had a baby girl born in the last year, the possibility that they were a candidate would not be good. So anyways, just to give you an idea of how I eliminated possibilites to narrow it down to one. Having said all of that, there is a possibility that they were not even in LA in 1870. Again, if James is Andrews brother, the 1900 census states he was born in MS. IF that is correct, that means they were already in MS, and you should check the MS 1870 census for them. I just went and checked LA for you on the chance the dates may have been wrong.
One other interesting thing I came across that you might want to keep in mind when doing your research: Although most of the Anthonys in LA in 1870 were African American, of the few that were white, most of them lived in New Orleans, and of those, many were from France. Something to consider when you get to the point of doing slave research and your family's last slave owners and who they might have been.
I hope I have been of some help to you, and I wish you all the best. It does take dedication and perservence, but it is all worth it as you discover who you are and where you came from.
All the best to you, and best of luck in your research.
Sonia - I forgot to mention. If you didn't know about the name Helland - it is a Scandanavian name. Kind of unusual. Might be something else to check into how she came by that name. It could mean nothing, but you never know. She might have that name for a reason.