Neville Road is in Rathgar and is off Highfield terrace. Frederck is listed there in Thom's of 1927 :
32 Neville Rd - Frederick Graham
the same address in 1938 shows a Frederick Thompson. (Not sure if this a mistake or the index and street listing sections a bit out of sync with the Rathgar street listing....or even connected to the Tower details mentioned below.. )
The other address is a bit of a problem, but should not be as it's probably very close to me. I cannot see any house or address named The Tower in the Clonskeagh area in the directories at the moment. Probably the best bet is something related to Clonskeagh Castle
the listings for this address are :
1938 - Henry M. Whitten BL, Clonskeagh Castle
1927 - Lt.Col. T.W. Thompson, Clonskeagh Castle
The historic OSI maps (1820s to 40s) shows a building named Thompson's Tower near to Clonskeagh Castle that could fit - see :
Clonskeagh Castle / Thompson's Tower (select the historic or historic BW option) Both the Castle and Tower are present on an 1880 map also - see attached image below.
If this is the correct place, then it would be near to where Whitebeam Rd (which is off Clonskeagh Rd) is now and could possibly have been considered as Milltown rather than Clonskeagh. I will keep searching..
Shane