So thought I'd give this a go, feel free to correct etc.

Note: my guitar is tuned half a step down but I've set the tuning accordingly.

G# (xx1114@1)                               C# (x43121@1)          G#I (xx1114@1)wanna marry a lighthouse keeper, and keep him company
G# (xx1114@1)                              Bb (x1333x@1)             EbI (x43121@3)wanna marry a lighthouse keeper, and live by the side of the sea
G# (xx1114@1)                         G#7I'll (xx1112@1)polish his lamps by the light of day
C# (x43121@1)                  C#7(or (x4342x@1)C#m)
So ships at night can find their way
G# (xx1114@1)                            Bb (x1333x@1)C#7 (x4342x@1)Eb7 (x32310@4)   G#I (xx1114@1)wanna marry a lighthouse keeper, won't that be okay?

C#m (x13321@4)                                   G#We'll (xx1114@1)take walks along the moonlit bay, maybe find treasure too
C#m (x13321@4)                          Bb (x1333x@1)       EbI'd (x43121@3)love living in a lighthouse, how bout you?

G# (xx1114@1)                                    C# (x43121@1)         G#I (xx1114@1)dream of living in a lighthouse baby, every single day
G# (xx1114@1)                             Bb (x1333x@1)                  EbI (x43121@3)dream of living in a lighthouse, the white one by the bay
G# (xx1114@1)                      G#7So (xx1112@1)if you want to make my dreams come true
C# (x43121@1)                   C#7/m
You'll be a lighthouse keeper too
G# (xx1114@1)                         Bb (x1333x@1)  C#7 (x4342x@1) Eb7 (x32310@4)      G# (xx1114@1)  FWe (133211@1)could live in a lighthouse, the white one by the bay
C#7 (x4342x@1)  Eb7 (x32310@4)    G# (xx1114@1)  FWon't (133211@1)that be okay?

C#7 (x4342x@1) Eb7 (x32310@4)  G# (xx1114@1)Peace