Marriage en Mass

From M.G.L.207:

1. No man shall marry his mother, grandmother, daughter, granddaughter, sister, stepmother, grandfather’s wife, grandson’s wife, wife’s mother, wife’s grandmother, wife’s daughter, wife’s granddaughter, brother’s daughter, sister’s daughter, father’s sister or mother’s sister.

2. No woman shall marry her father, grandfather, son, grandson, brother, stepfather, grandmother’s husband, daughter’s husband, granddaughter’s husband, husband’s grandfather, husband’s son, husband’s grandson, brother’s son, sister’s son, father’s brother or mother’s brother.

You'd think it'd be simpler to just combine them thusly, given same-sex marriage and general clarity:

No person shall marry their parent, grandparent, child, grandchild, sibling, stepparent, grandparent's spouse, grandchild's spouse, spouse's parent, spouse's grandparent, spouse's child, spouse's grandchild, sibling's child, or parent's sibling.

But wait, they aren't equivalent! Note the prohibition on a man marrying his wife's mother, but no similar prohibition on a woman marrying her husband's father. (And the corresponding bits that a woman cannot marry her daughter's husband but no mention of a man's son's wife being off-limits.) How odd. Of course, if you have a spouse to speak of, I'm pretty sure marrying *anyone* is off-limits...

In other random marriage tidbits, some local towns and their fees for a marriage license are as follows:
- Watertown: $25
- Medford, Arlington: $30
- Cambridge: $35
- Somerville: $45
- Boston: $50

There is no residency or ceremony requirement, so anyone in MA can get their license in any town and marry in any other town. Does a Boston license offer twice the marriage bliss? A prettier certificate? And what's up with Somerville?

(For comparison, NY is $40 statewide, except for NYC which is $35, and you can also fill out all the forms online so they can just print them when you go in. Even though NY also has a waiting period, they give you the license on the spot and you wait with it in your possession, whereas MA requires in-person pick-up three days later.)