Margow, like you, I think it might be Linkhouse. Linkhouse or Linkfield are the only two possibilities I can see in the censuses around that time. As Boo suggests, asking for a fresh image can make a big difference to the ligibility of these images.
Have you managed to find Euphemia Gillies's birth details? Just wondering if this is her in 1861...11 years before her marriage where she showed as aged 29:
Euphemia Gills 28 Head agr. lab. b. Duirnish, Inverness
Marion Patson 24 Fellow-serv (Servant) b. Duirnish, Inverness
Address Linkhouse Bothy, Dirleton, East Lothian
Monica