Maria Cullen born 20 Dec 1858 Sug ff, county Wicklow

Townland is the term rather than township, you didn't mention what the Calary connection was...  I think maybe the placename you have could be 'Sugar Loaf', which is a mountain just west of Kilmacanogue and parts of this would be in Calary civil parish.

The only townland in Calary civil parish starting with 'S' is Sraghmore, and in neighbouring Kilmacanogue civil parish there also just one 'Stilebawn'

here's the probable marriage on the BMD Index :

Name : Richard Ambrose Blake
Event Type : Marriage
Quarter and Year     Jul - Sep 1879
Registration District     Dublin North
Volume  2 Page 441

A Maria Cullen appears with the same references, so a possible cross-match. You can use the details above to order a research cert from the GRO (cost €4) which would include date and place of marriage, residences for the bride and groom, father's names, occupations and also names of two witnesses.

p.s. that marriage is appearing on the RootsIreland (pay-website) Index, under Clontarf RC parish. Clontarf is just north of the city and within Dublin North Registration District. A transcript should include date and parish etc, but note that the information included in RC marriage are sometime less detailed than the equivilant civil records, given a choice as in this case I'd go for the civil record.

GRO = General Register's Office, who look after registration of civil Birth, Marriage and Death registrations.

To order a research cert download the order form from this link, print it out and enter your own details - name,address credit card etc. Ignore the irrelevant sections (the form is designed for more current certs for legal purposes) and and enter the references above on the form, make sure to tick the 'photocopy' option in section 3. This ensures you get the research cert which is not only cheaper, but it's a photocopy/scan of the national register. so you're not relying on a modern transcript if anything is difficult to read.

The usual delivery method is by post but there's an option on the form which you can tick so that the GRO send the you the image by email instead - see section 1 of the form.

Calary is the civil parish, and the area is covered by several Catholic parishes - Bray, Glendalough, and Kilquade, so their parish would probably depend on where exactly in Calary they lived.

There are four baptisms showing up on the RootsIreland index with parents Patrick Cullen and Maria Murphy, but all are in Killavany RC parish much further south in the county near Arklow.

Hopefully that marriage cert will provide a few useful clues...

Some of the younger children for that couple, born after 1864, are included in extracted civil birth records on FamilySearch - see the first seven records : here   (There are duplicate in this collection, so some names apear more than once) 

These show a Rachel born 1864, Patrick born 1867, Elizabeth born 1870, all registered in in Tinahely district. The town Tinahely is located about 30km (~19 miles) west of the town of Arklow.